It is not possible to open an OST file directly in Outlook, especially if it has become orphaned. In such cases, using the eSoftTools OST to PST Converter Software is the best solution. This tool converts the OST file into PST format, allowing for easy access within Outlook without any data loss. It safely restores all emails, contacts, and calendars, and the conversion process itself is both simple and fast.

Read More:- Open an OST file to Outlook